Rack & Pinion Linear-Rotary Feedthroughs

The RPLR series of linear-rotary feedthroughs uses a 3/4" diameter probe actuated by a rack and pinion positive drive.  The independent rotary actuation is achieved by a second rotary feedthrough.  Only the 3/8" diameter probe tip rotates, keyed with a ball bearing keyway allowing mounting of jaw-type devices which are actuated by the rotary action.

RPRL2-cleaned

RPL-0.75 Series

  • 3/8" O.D. linear probe
  • 3/4" O.D. linear support shaft
  • 2.75" O.D. mounting flange
  • Up to 50" linear travel
  • Rack and pinion positive drive
  • Adjustable position stop and lock
  • Maximum bakeout temperature: 200°C
RPL75-1

RPLR-0.75 Series

  • 3/8" O.D. rotary probe
  • 3/4" O.D. linear support shaft
  • 2.75" O.D. mounting flange
  • Up to 50" linear travel
  • Rack and pinion positive drive
  • Rotary bellows sealed feedthrough
  • Adjustable position stop and lock
  • Maximum bakeout temperature: 200°C
RPLR

Options

Remote Rotary Operation (for RPLR only)

  • For use on long stroke RPLR's (30"+)
  • Locates a rotary actuator knob near the linear actuator feedthrough
  • Position lock 
RPLR-RA

Rotary Limit Switch Actuator Assembly

  • Supplies limit switch protection to multi-turn rotary feedthroughs
  • Adjustable, one turn to maximum
  • Switch contact ratings: 5A
  • Compact unit: 1.5" O.D. stainless steel body. Length determined by maximum number of turns
  • 1/4" O.D. input shaft
  • All ball bearing operation
  • Without mount

Mechanical Counter

  • 40 counts per feedthrough rotation (approximately 0.034" linear travel per count on RPLR)
  • Removable for bakeout
  • Retrofit kit allows mounting without breaking vacuum

Stepping or Synchronous Motorized Rotary Feedthrough

  • With integral motor drive.
  • 50 oz-in holding torque (higher torque motors available)
  • Low inertia design
  • Manual knob
  • Motor controller sold separately

NOTE: The /MS or /MY motor option is suitable for the linear actuation when the operation is horizontal. When the linear travel is other than horizontal, the /MS/W option should be used. 

We strongly recommend the use of limit switches on this or any other motor drive being used to actuate the linear drive on the RPL or RPLR. The limit switch actuator assembly specified below (or one similar) should be used to protect the RPL or RPLR from being over-driven. See the RLS rotary limit switch option. 

Stepping or Synchronous Motorization with High Precision Worm Drive

  • Anti-backlash worm gear drive
  • Self-locking
  • Manual knob
  • Capable of driving up to 16"/min minimum at 1,000 pps
  • May be field-mounted without breaking vacuum, or returned to the factory for installation
  • Motor controller sold separately

NOTE: This motor drive is self-locking. This is necessary to protect the probe and associated equipment from spinning down if the power is removed from the motor. However, because of the self-locking design, the drive can generate significant torque at the FRM, and thus do damage if over driven. 

Speed Control Motor Drive

  • Variable speed
  • Switchable direction
  • 0-95 rpm with 50 oz-in torque
  • Higher torque motors and Different speed ranges optional
  • Includes controller

Call or email with your requirements and for current pricing.

800.962.2310 / sales@thermionics.com